At least 20 people were killed during a 100-km mountain race in the northwestern ... news agency said early on Sunday that the 100-km marathon race began near the city of Baiyin on Saturday ...

Do you like running up and down mountain trails where the air is thin? If so, then this is the place for you. Even if you've never dreamed about running beyond the marathon or venturing off the roads, ...

When I was 18 years old, I tried to make an annual tradition out of racing my mountain bike 100 miles in one day every summer. I loved the motivation my training gave me to keep working toward ...